Illumination system, method for controlling illumination device, and illumination control device

Abstract

By improving the accuracy of detecting people's positions, lighting devices can be controlled in a way that is more suited to the situation. [Solution] The lighting system 10 includes a lighting device 1 that adjusts the illumination state including at least one of the illumination direction and focal length to illuminate an illumination area, a control device 500 that controls the illumination state of the lighting device, and a sensor 102 that detects the presence or absence of a person in each of multiple detection areas, and the control device identifies illumination state data that specifies the illumination state according to the position detection model based on the detection results of the sensor and a position detection model that has been trained in advance to identify occupied areas among the multiple detection areas where people exist, and controls the illumination state of the illumination area based on the illumination state data.

Description

[Technical field]

[0001] The present invention relates to a lighting system, a method for controlling a lighting device, and a lighting control device. [Background technology]

[0002] 2. Description of the Related Art Generally, there is known a technique for detecting the presence or absence of a person in an illumination space and controlling the irradiation direction, light amount, etc. of an illumination device (see, for example, Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-61080 [Patent Document 2] JP 2012-28015 A [Patent Document 3] JP 2021-184346 A Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, in technology for detecting the presence or absence of people in a lighting space and controlling the irradiation direction, light amount, etc. of a lighting device, there has been a demand for control that is more suited to the situation by improving the accuracy of detecting the position of people.

[0005] The present invention addresses the above-mentioned problem as an example, and aims to provide a technique for controlling a lighting device in accordance with a situation by improving the accuracy of detecting the position of a person. [Means for solving the problem]

[0006] In order to achieve the above object, the lighting system according to the present invention includes a lighting device that adjusts an illumination state including at least one of an illumination direction and a focal length and illuminates an illumination area, a control device that controls the illumination state of the lighting device, and a sensor that detects the presence or absence of a person in each of a plurality of detection areas, and the control device specifies illumination state data that specifies the illumination state according to the position detection model based on a detection result of the sensor and a position detection model that has been trained in advance to identify a person-present area among the plurality of detection areas, and controls the illumination state of the illumination area based on the illumination state data. Effect of the Invention

[0007] According to the lighting system of the present invention, by improving the accuracy of detecting the position of a person, it is possible to control the lighting device in accordance with the situation more appropriately. [Brief description of the drawings]

[0008] [Figure 1] 1 is a functional block diagram illustrating a schematic configuration of a lighting system according to an embodiment of the present invention. [Diagram 2] 1 is a perspective view showing an illumination device included in an illumination system according to an embodiment; [Diagram 3] 1 is a schematic diagram showing an example of a lighting space in which a lighting system according to an embodiment is installed; [Figure 4] 5 is a schematic diagram showing an example of an illumination state realized by a position detection model and illumination state data in an illumination space in which a lighting system according to an embodiment is installed; FIG. [Diagram 5] 5 is a schematic diagram illustrating an example of a process for generating a position detection model by the control device according to the embodiment; FIG. [Figure 6] 11 is a schematic diagram showing another example of the process of generating a position detection model by the control device according to the embodiment; FIG. [Figure 7] 5 is a schematic diagram illustrating an example of a weighting process for a position detection model performed by a control device according to an embodiment. FIG. [Figure 8]5 is a flowchart illustrating an example of a lighting control method executed by the control device according to the embodiment. [Figure 9] 10 is a flowchart illustrating an example of a process for generating a position detection model executed by a control device according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] 1. Overview of the embodiment First, a typical embodiment of the invention disclosed in this application will be outlined. In the following description, as an example, reference numerals in the drawings corresponding to components of the invention are given in parentheses.

[0010] [1] A lighting system (10) comprising: a lighting device (1) that adjusts an illumination state including at least one of an illumination direction or a focal length and illuminates an illumination area with light; a control device (500) that controls the illumination state of the lighting device; and a sensor (102) that detects the presence or absence of a person in each of a plurality of detection areas, wherein the control device specifies illumination state data that specifies the illumination state according to the position detection model based on a detection result of the sensor and a position detection model that has been trained in advance to identify a person-present area among the plurality of detection areas, and controls the illumination state for the illumination area based on the illumination state data.

[0011] [2] The lighting system of [1], wherein the occupied area includes an area different from the illumination area.

[0012] [3] The lighting system described in [1] or [2], wherein the sensor detects the presence or absence of a person in each of the multiple detection areas by temperature changes, the populated area includes multiple detection areas, and the control device calculates information representing a weight of the temperature change for each of the multiple detection areas included in the populated area, and generates the position detection model by matching the multiple detection areas included in the populated area with the information representing the weight of the temperature change.

[0013] [4] The lighting system described in [1] to [3], wherein the control device calculates an average value of the temperature change for each of the multiple detection areas included in the occupied area, and information representing the weight of the temperature change is calculated based on the average value.

[0014] [5] The lighting system according to any one of [1] to [4], wherein the illumination state includes any one of a light distribution angle, brightness, and light color.

[0015] [6] A method for controlling an illumination state of a lighting device (1) that illuminates an illumination area by adjusting an illumination state including at least one of an illumination direction or a focal length, in which a control device (500) specifies illumination state data that specifies the illumination state according to a position detection model based on a detection result of the presence or absence of a person in each of a plurality of detection areas of a sensor and a position detection model that has been trained in advance to identify a person-presence area among the plurality of detection areas, and controls the illumination state for the illumination area based on the illumination state data.

[0016] [7] A control device (500) that controls a lighting device (1) that illuminates an illumination area by adjusting an illumination state including at least one of an illumination direction or a focal length, wherein the control device specifies illumination state data that specifies the illumination state according to a position detection model based on a detection result of the presence or absence of a person in each of a plurality of detection areas of a sensor and a position detection model that has been trained in advance to identify a person-presence area among the plurality of detection areas, and controls the illumination state for the illumination area based on the illumination state data.

[0017] 2. Specific examples of embodiments DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lighting system, a method for controlling a lighting device, and a lighting control device according to embodiments of the present invention will be described below with reference to the drawings.

[0018] Fig. 1 is a functional block diagram showing a schematic configuration of a lighting system 10 according to an embodiment of the present invention. Fig. 2 is a perspective view showing a lighting device 1 provided in the lighting system 10. Fig. 3 is a schematic diagram showing an example of a lighting space 200 in which the lighting system 10 is installed. Fig. 4 is a schematic diagram showing an example of lighting states I1, I2 realized by position detection models A1, A2 and lighting state data in the lighting space 200 in which the lighting system is installed.

[0019] As shown in FIG. 1, the lighting system 10 includes a lighting device 1, a lighting control device (hereinafter referred to as a "control device 500"), and a sensor device 100. The lighting system 10 is installed in an illumination space 200 of a store or an exhibition hall as shown in FIG. 3 and FIG. 4. In the lighting system 10, the control device 500 controls the illumination state of the lighting device 1, such as the illumination angle, focal length, light distribution angle, light color (including color temperature), and brightness of the lighting device 1 for irradiating illumination objects O1 and O2 such as exhibits and furniture in the illumination space 200, based on information acquired from the sensor device 100 and information generated in advance. The terminal 300 is a device equipped with an MCU and a communication function, such as a smartphone, a tablet terminal, or a PC (Personal Computer). The terminal 300 can communicate with the control device 500 and the lighting device 1 by the communication function. The terminal 300 can also communicate with the sensor device 100 by the communication function. The terminal 300 may be an electronic device having a communication function in which a predetermined button operation corresponds to an output signal, such as a remote control device.

[0020] 1 and 2, the lighting device 1 includes a main body 2 and a control circuit 5. The main body 2 includes a housing 21, a lens 22, a base 23, and an arm 24.

[0021] Housing 21 houses components of lighting device 1 including a light source configured, for example, by an LED (Light Emitting Device), a reflector, and the like, both of which are not shown, and holds lens 22 at its opening. The light source can control at least one of light color (including color temperature) and brightness, for example, by controlling the lighting state of the LED. Housing 21 houses focus motor Mf. Focus motor Mf moves the position of lens 22 to make it possible to adjust at least one of the focal distance from main body 2 and the light distribution angle (arrow F).

[0022] The base unit 23 is connected to, for example, a ceiling or a wall of the lighting space 200. The base unit 23 holds an arm 24 fixed to its underside. A pan motor Mp and a control circuit 5 are housed in the base unit 23. The base unit 23 is configured to be rotatable left and right by the pan motor Mp. By rotating the pan motor Mp, the irradiation angle L of the light from the main body unit 2 can be panned left and right (arrow P).

[0023] The arm 24 holds the housing 21 on the base part 23. The arm 24 is provided with a tilt motor Mt that enables the housing 21 attached to the arm 24 to rotate in the up and down direction. By rotating the tilt motor Mt, the irradiation angle L of the light from the housing 21 can be tilted up and down (arrow T).

[0024] The control circuit 5 is realized by a computer such as a microcomputer realized by a processor such as an MCU (Micro Control Unit) not shown and a memory for calculation such as a RAM (Random Access Memory). The MCU is a calculation device that executes calculation processing of a program to realize various functions as the control circuit 5 described below. The memory is a volatile memory in which a program to be calculated by the MCU is stored. The control circuit 5 stores in the memory a function program stored in a storage unit not shown. The function program stored in the storage unit is a program for realizing various functions of the control circuit 5 in this embodiment. Among the function programs, a program corresponding to a function to be realized is sequentially stored in the memory and is sequentially executed by the MCU. The program is composed of functions and fixed values ​​corresponding to the functions. When a program is executed, not only functions but also data that is a fixed value is required.

[0025] The control circuit 5 realizes a communication function, a motor control function, and a light source control function, which will be described below, by using the above-described hardware configuration and program. The control circuit 5 realizes, as the communication function, a function of receiving control information of the lighting device 1 transmitted from the control device 500. In addition, as the motor control function, the control circuit 5 variably controls the rotation amount and rotation direction of the pan motor Mp, tilt motor Mt, and focus motor Mf described above, in accordance with the control information of the lighting device 1 received from the control device 500, and controls the focal length, irradiation direction, and light distribution angle of the lighting device 1. Furthermore, the control circuit 5 controls the lighting state of the above-described light source (LED) in accordance with the control information of the lighting device 1 received from the control device 500, to control at least one of the light color (including color temperature) and brightness.

[0026] As shown in Fig. 1, the sensor device 100 has a communication unit 101 and a sensor 102. The communication unit 101 transmits information detected by the sensor 102 to the control device 500, for example, by wireless communication. The sensor 102 is, for example, an infrared sensor composed of a plurality of MEMS (Micro Electro Mechanical Systems) elements that detects temperature changes in a detection area D (see Fig. 3). The sensor 102 can detect the presence or absence of a person in each of the detection areas by detecting heat (infrared rays) emitted by a person, object, etc., for each of the plurality of detection areas.

[0027] The control device 500 is an example of a computer such as a microcomputer realized by a processor such as an MCU (Micro Control Unit) (not shown), a memory for calculation such as a RAM (Random Access Memory), and a storage unit that stores programs and processing data. The MCU is a calculation device that realizes various functions as the control device 500 described below by executing calculation processing of the program. The memory is a volatile memory in which the program to be calculated by the MCU is stored. The control device 500 stores the function programs stored in the storage unit (not shown) in the memory. The function programs stored in the storage unit are programs for realizing various functions of the control device 500 in this embodiment. The memory sequentially stores programs corresponding to the functions to be realized among the function programs, and the programs are sequentially executed by the MCU. The programs are composed of functions and fixed values ​​corresponding to the functions. When a program is executed, not only functions but also data that is a fixed value is required.

[0028] The storage unit is realized by a non-volatile memory such as an EEPROM (Electrically Erasable Programmable Read-Only Memory). The storage unit stores function programs for implementing various functions. The storage unit also stores various processing data used by the control device 500, such as a position detection model and irradiation state data described later, and control information for the lighting device 1.

[0029] The control device 500 is configured with functional blocks such as a communication unit 501, a control unit 502, and an operation / display unit 503 by the above-described hardware configuration and programs.

[0030] The communication unit 501 can communicate with external devices, that is, the lighting device 1 and the sensor device 100, by wireless or wired communication using the above-mentioned configuration of the control device 500 and a communication interface (not shown). The communication unit 501 can also communicate with a terminal 300 such as a smartphone.

[0031] The operation / display unit 503 is an input interface for the user to operate the lighting device 1 via the control device 500, and an output interface for the user to recognize the control state of the control device 500 and the lighting device 1.

[0032] Examples of the hardware configuration for realizing the operation unit in the operation / display unit 503 include various touch panels, keyboards, numeric keys, buttons, and the like. For example, the user can operate the operation / display unit 503 to set the control state of the lighting device 1 via the control device 500. Note that the hardware configuration for realizing the operation unit is not limited to the above-mentioned example, and may have a function for accepting input by the user to operate the control device 500. The operation unit may be, for example, one that accepts operations by commands of various communication interfaces via the communication unit 501, or one that accepts operations by voice command input.

[0033] The hardware configuration realizing the display unit in the operation / display unit 503 is a functional unit that allows the user to recognize the control state of the control device 500 and the lighting device 1, for example, a display device equipped with an LCD (Liquid Crystal Display) or an organic EL.

[0034] In addition, when the operation / display unit 503 is, for example, a touch panel, the function as an operation unit and the function as a display unit are realized integrally. In addition, the operation / display unit 503 may not have a part of the function as an operation unit or a display unit. In addition, the control device 500 is not limited to one having the operation / display unit 503 in the control device 500, and the control device 500 may not have the operation / display unit 503 in the control device 500, and for example, the terminal 300 may realize the function as the above-mentioned operation / display unit 503.

[0035] The control unit 502, in cooperation with the MCU and the memory, executes a program stored in the storage unit, thereby realizing a method of controlling the lighting device 1 by the control device 500, which performs the processes described below.

[0036] As shown in FIG. 3, in the lighting system 10, for each of the regions (detection regions D) of a predetermined size (area) into which the lighting space 200 is divided according to the detection unit by the sensor 102, a position detection model A is pre-trained as a model for identifying an area (occupied area) among the multiple detection regions D in which a person exists based on the detection result of the sensor 102.

[0037] In FIG. 4, a position detection model A1 and a position detection model A2 identify human regions M1 and M2 in which a person P1 and a person P2 existing at different positions in the lighting space 200 exist.

[0038] 4, the control unit 502 of the control device 500 controls the illumination states I1, I2 of the illumination objects O1, O2 in the illumination area based on the illumination state data that specifies the illumination states of the illumination device 1 according to the position detection models A1, A2. The illumination area to which the illumination state of the illumination device 1 controlled by the control unit 502 is provided is, for example, an area different from the manned area in the illumination space 200 where the persons P1, P2 exist.

[0039] In Fig. 4, the illumination state I1 is, for example, an illumination state in which the illumination device 1 illuminates an illumination object O1. Moreover, the illumination state I2 is, for example, an illumination state in which the illumination device 1 illuminates an illumination object O2. In Fig. 4, the illumination states I1 and I2 show an example in which the illumination angle and the like are mainly controlled, but the illumination states controlled by the illumination state data are not limited to those described above. Moreover, the illumination area of ​​the illumination device 1 controlled by the control unit 502 may be an area including the occupied areas M1 and M2 in which the people P1 and P2 exist in the illumination space 200.

[0040] Fig. 5 is a schematic diagram showing an example of a generation process of the position detection model A11 by the control device 500. Fig. 6 is a schematic diagram showing another example of a generation process of the position detection model A12 by the control device 500.

[0041] The learning data 200L_11-14 shown in Fig. 5 and the learning data 200L_21-24 shown in Fig. 6 are data indicating temperature changes that occur when a person exists at different positions in the lighting space 200. The position detection data 200M1 shown in Fig. 5 and the position detection data 200M2 shown in Fig. 6 are data indicating that the position detection models A11 and A12 in the lighting space 200 are specified based on the learning data 200L_11-14 and the learning data 200L_21-24.

[0042] The learning data 200L_11-14 are data obtained by measuring temperature changes occurring when a person is present at the same position in the lighting space 200 multiple times. Similarly, the learning data 200L_21-24 are data obtained by measuring temperature changes occurring when a person is present at the same position in the lighting space 200 multiple times. In the human regions M11-M14 and M21-M24 of the learning data 200L_11-14 and 200L_21-24, temperature changes occur compared to other detection regions D due to the presence of people within the ranges of the multiple detection regions D in the lighting space 200 shown in FIG. 3. That is, the human regions M11-M14 and M21-M24 of the learning data 200L_11-14 and 200L_21-24 indicate the presence or absence of a person and the position of the person in the lighting space 200 based on the temperature change of the detection region D detected by the sensor 102. Δt indicates the high and low (Hi-Lo) of the temperature change. The following mainly describes the process of generating the position detection model A11 shown in FIG.

[0043] In the learning data 200L_11-14, people are present at the same positions in the lighting space 200, but parts of the detection areas D included in the respective human regions M11-M14 are different. In addition, in the learning data 200L_11-14, the values ​​of the temperature changes occurring in the detection areas D included in the respective human regions M11-M14 are also different.

[0044] In the control device 500, the control unit 502 calculates information representing the weight of the temperature change for each of the detection regions D included in the manned regions M11 to M14 in the learning data 200L_11 to 200L_14.

[0045] FIG. 7 is a schematic diagram showing an example of weighting processing of the position detection model performed by the control device 500. In FIG.

[0046] 7, the information representing the weight of the temperature change can be generated by, for example, the control unit 502 calculating the average value of the temperature change Δt for each of the individual detection areas D included in the respective manned areas M31-M34 in the learning data 200L_31-34, and generating the position detection data 200M3 in which the detection area DH with the highest average value is specified. The detection area DH with the highest average value in the position detection data 200M3 corresponds to the position detection models A11 and A12 in the position detection data 200M1 and 200M2. In other words, the control unit 502 can calculate the average value of the temperature change Δt for each of the individual detection areas D included in the learning data 200L_31-34, and use the detection area DH with the highest average value as the position detection model.

[0047] 5, in the control device 500, the control unit 502 generates a position detection model A11 by associating a plurality of detection areas D included in the human presence areas M11 to M14 with information representing the weight of the temperature change. The position detection model A11 is generated so as to include, for example, the detection area D within a predetermined range including the detection area DH with the highest average value.

[0048] Similar to the process of generating the position detection model A11 described above, the control unit 502 can also generate the position detection model A12 based on the manned regions M21-M24 of the learning data 200L_21-24 shown in Fig. 6. The number of position detection models can be set arbitrarily according to the number of associated irradiation state data.

[0049] The control unit 502 performs a process of associating the generated position detection models A11 and A12 with the illumination state data that specifies the illumination state of the lighting device 1. The illumination state data is stored in the storage unit of the control unit 502, for example, by the user inputting information that specifies the illumination state from the operation / display unit 503. Any number of pieces of illumination state data can be stored according to the number of position detection models A11 and A12. The control unit 502 stores the illumination state data and the position detection models A11 and A12 in association with each other, for example, as in a data table, in the storage unit. Also, any number of pieces of illumination state data can be stored according to the time period. The control unit 502 stores the illumination state data and the position detection models A11 and A12, as well as the time period in which the illumination state data is executed, in association with each other, for example, as in a data table, in the storage unit.

[0050] The control unit 502 controls the irradiation states I1 and I2 of the irradiation area based on the irradiation state data associated with the position detection models A11 and A12 as shown in Fig. 4. The control unit 502 may also control the irradiation states I1 and I2 of the irradiation area by changing the association between the position detection models A11 and A12 and the irradiation state data according to the time period.

[0051] FIG. 8 is a flowchart showing an example of a lighting control method executed by the control device 500.

[0052] 8, when the control device 500 and the lighting device 1 are powered on in the lighting system 10, the control unit 502 of the control device 500 determines whether or not a temperature change detection result has been output from the sensor 102 of the sensor device 100, that is, whether or not the presence of a person has been detected (step S101). If the sensor 102 does not detect a person (S101: NO), the control unit 502 repeats the process of S101.

[0053] If the sensor 102 detects a person (S101: YES), the control unit 502 identifies a position detection model that has been pre-trained for the human areas M1, M2 among the multiple detection areas D where the people P1, P2 are present, based on the detection results of temperature changes in the multiple detection areas D of the lighting space 200 obtained from the sensor 102 (step S102).

[0054] The control unit 502 specifies the irradiation state data associated with the position detection model specified in S102 based on the information stored in the storage unit (step S103). The control unit 502 controls the irradiation state of the irradiation area based on the irradiation state data specified in S103 (step S104).

[0055] FIG. 9 is a flowchart illustrating an example of a process for generating a position detection model executed by a lighting control device according to an embodiment.

[0056] 9, in the lighting system 10, when the control device 500 and the lighting device 1 are powered on and the control unit 502 of the control device 500 starts the process of generating a position detection model, the control unit 502 acquires a detection result of a temperature change from the sensor 102 of the sensor device 100 (step S201). For example, a trigger signal is transmitted from the terminal 300 to the sensor device 100, and the process of generating a position detection model is started upon reception of the trigger signal by the sensor device 100.

[0057] The control unit 502 identifies the value of the temperature change occurring in the detection area D included in the manned areas M11 to M14 of each of the learning data 200L_11 to 200L_14 from the data acquired from the sensor 102 (step S202).

[0058] The control unit 502 determines whether the learning data 200L_11-14, in which the temperature change value is specified, has been acquired a predetermined number of times from the sensor 102 (step S203). If the predetermined number of times has not been reached (S203: NO), the control unit 502 repeats the processes of S201 and S202.

[0059] If the predetermined number of times is reached (S203: YES), the control unit 502 calculates the average value of the temperature change Δt for each individual detection area D contained in each of the manned areas M31 to M34 in the learning data 200L_11 to 14, and identifies the detection area DH with the highest average value among them (step S204).

[0060] The control unit 502 generates a position detection model A11 by associating a plurality of detection areas D included in the manned areas M11 to M14 with information indicating the weight of the temperature change (step S205).

[0061] 3. Effects of the embodiment The lighting system 10 configured as above includes the lighting device 1 that adjusts the lighting state including at least one of the lighting direction and the focal length to illuminate the illumination area, the control device 500 that controls the lighting state of the lighting device 1, and the sensor 102 that detects the presence or absence of people P1, P2 in each of the multiple detection areas D. In the lighting system 10, the control device 500 specifies illumination state data that specifies illumination states I1, I2 according to the position detection models A1, A2 based on the detection result of the sensor 102 and the position detection models A1, A2 that have previously learned about the human presence areas M1, M2, which are areas among the multiple detection areas D where the people P1, P2 exist, and controls the illumination states I1, I2 of the illumination area based on the illumination state data.

[0062] According to the lighting system 10 configured as described above, in a technology for detecting the presence or absence of people in the lighting space and controlling the illumination direction, light amount, etc. of the lighting device, by training the position detection models A1, A2 in advance, even if there is a difference in the detection results of people P1, P2 by the sensor 102, the detection accuracy of the person's position can be improved and control can be performed that is more suited to the situation.

[0063] Therefore, according to the lighting system 10, by improving the accuracy of detecting the position of a person, it is possible to control the lighting devices in a way that is more suited to the situation.

[0064] The manned areas M1, M2 may include areas different from the illumination area. In this way, for example, in the illumination device 1 that illuminates illumination objects O1, O2 such as exhibits and furniture in an illumination space 200 such as a store or exhibition hall, the illumination conditions such as the illumination angle, focal length, light distribution angle, light color (including color temperature), and brightness on the illumination objects O1, O2 can be changed depending on the positions of the people P1, P2 who are looking at the illumination objects O1, O2. In other words, according to the illumination system 10, it is possible to expect an eye-catching effect and a light production effect on the illumination objects depending on the presence or absence and the position of the people P1, P2.

[0065] In the lighting system 10, the sensor 102 detects the presence or absence of people P1, P2 in each of the multiple detection areas D, for example, by temperature change. The populated areas M1, M2 may include multiple detection areas D, and the control device 500 may calculate information representing the weight of the temperature change for each of the multiple detection areas D included in the populated areas M1, M2, and generate a position detection model by associating the multiple detection areas included in the populated areas with the information representing the weight of the temperature change.

[0066] The control device 500 may calculate an average value of the temperature change for each of a plurality of detection areas included in the person area, and calculate information representing the weight of the temperature change based on the average value.

[0067] According to the lighting system 10 configured as described above, in a technology for detecting the presence or absence of people in the lighting space and controlling the illumination direction, light intensity, etc. of the lighting device, when the position detection models A1, A2 are trained in advance, by using information on temperature changes in the occupied area obtained multiple times, the detection accuracy of the position of people can be further improved even if there is a difference in the detection results of people P1, P2 by the sensor 102, and control can be performed that is more suited to the situation.

[0068] Therefore, according to the lighting system 10, by improving the accuracy of detecting the position of a person, it is possible to control the lighting devices in a way that is more suited to the situation.

[0069] The illumination state may include any one of a light distribution angle, brightness, and light color.

[0070] In addition, those skilled in the art can appropriately modify the present invention in accordance with conventionally known knowledge. As long as the configuration of the present invention is still provided even after such modifications, the modifications are of course included in the scope of the present invention.

[0071] For example, if the sensor 102 is an infrared sensor that receives infrared rays and converts them into an electrical signal, the main types known are thermal sensors that detect electrical properties that change due to the heat of infrared rays, and quantum sensors that detect electrical phenomena caused by light energy, but the operating principle is not particularly limited.

[0072] Furthermore, for example, the sensor 102 is not limited to an infrared sensor, but may be, for example, an ultrasonic sensor, a microwave sensor, an image recognition sensor, or the like.

[0073] The information representing the weight of the temperature change may be calculated based on whether or not the cumulative value of the temperature change of each detection area included in the human area exceeds a predetermined threshold. The information representing the weight of the temperature change may be calculated in descending order of the cumulative value. The information representing the weight of the temperature change may take into account, for example, the number of times each detection area is included in the human area.

[0074] When the control device 500 generates a position detection model by matching multiple detection areas included in an occupied area with information representing the weight of temperature change, the position detection model may be generated to include, for example, detection area D where the above-mentioned cumulative value exceeds a predetermined threshold, or multiple detection areas within a predetermined range centered on the detection area where the above-mentioned cumulative value is the highest.

[0075] The lighting system 10 may be a system that does not include an independent control device 500. The control device 500 may be incorporated in the lighting device 1 or in the sensor device 100. For example, when the control device 500 is incorporated in the lighting device 1, the position detection model and irradiation state data may be stored in the storage unit of the lighting device 1, and the information detected by the sensor 102 may be received by wireless communication to control the irradiation state of the irradiation area. Also, for example, when the control device 500 is incorporated in the sensor device 100, the position detection model and irradiation state data may be stored in the storage unit of the sensor device 100, and the information detected by the sensor 102 may be transmitted to the lighting device 1 by wireless communication to control the irradiation state of the irradiation area. [Explanation of symbols]

[0076] 1...lighting device, 2...main body, 5...control circuit, 10...lighting system, 21...housing, 22...lens, 23...base, 24...arm, 100...sensor device, 101...communication unit, 102...sensor, 200...illumination space, 200L_11-14, 200L_21-24, 200L_31-34: learning data, 200M1, 200M2, 200M3: position detection data, 300...terminal, 500...control device, 501...communication unit, 502...control unit, 503... Operation and display unit, A, A1, A11, A12, A2...position detection model, D, DH...detection area, F...focus, I1, I2...illumination status, L...illumination angle, M1, M11, M12, M13, M14, M2, M21, M22, M23, M24, M31, M32, M33, M34...occupied area, Mf...focus motor, Mp...pan motor, Mt...tilt motor, O1, O2...irradiated object, P...pan, P1, P2...person, T...tilt, Δt...temperature change

Claims

1. An illumination device that adjusts an illumination state including at least one of an illumination direction and a focal length to illuminate an illumination area; A control device for controlling the illumination state of the illumination device; A sensor for detecting the presence or absence of a person in each of a plurality of detection areas; Equipped with the sensor is an infrared sensor configured with a plurality of MEMS elements corresponding to the plurality of detection areas, respectively, and detects the presence or absence of a person in each of the plurality of detection areas based on a temperature change; The control device includes: Identifying illumination state data that specifies the illumination state according to the position detection model based on the detection result of the sensor and a position detection model that has been previously trained on a human presence area that is an area where a person exists among the plurality of detection areas; Controlling the illumination state of the illumination region based on the illumination state data; The attended region includes a region different from the irradiated region, The human presence area includes a plurality of the detection areas, The location detection model is the detection area is calculated using a plurality of pieces of learning data in which the person is present at the same position in the lighting space, but a part of the detection area included in each of the person-present areas is different; information representing a weight of the temperature change for each of the plurality of detection areas included in the human area is calculated based on the temperature change for each of the plurality of detection areas included in the human area of ​​the plurality of learning data, and the plurality of detection areas included in the human area are associated with the information representing the weight of the temperature change. Lighting system.

2. The location detection model is information representing a weight of the temperature change for each of the plurality of detection areas included in the human area is calculated based on an average value of the temperature change for each of the plurality of detection areas included in the human area of ​​the plurality of learning data, and the plurality of detection areas included in the human area are associated with the information representing the weight of the temperature change.

10. The lighting system of claim 1.

3. The illumination state includes any one of a light distribution angle, brightness, and light color.

3. A lighting system according to claim 1 or 2.

4. A method for controlling an illumination state of an illumination device that illuminates an illumination area by adjusting an illumination state including at least one of an illumination direction and a focal length by a control device, The control device includes: The infrared sensor is composed of a plurality of MEMS elements respectively corresponding to a plurality of detection areas, and detects the presence or absence of a person in each of the plurality of detection areas by a temperature change. Based on a detection result of the presence or absence of a person in each of the plurality of detection areas of the sensor and a position detection model that has been previously trained to identify a person-presence area among the plurality of detection areas, irradiation state data is specified that specifies the irradiation state according to the position detection model; Controlling the illumination state of the illumination region based on the illumination state data; The attended region includes a region different from the irradiated region, The human presence area includes a plurality of the detection areas, The location detection model is a plurality of pieces of learning data are used to calculate the detection area, each of which includes a different part of the human presence area, even though a person is present at the same position in the lighting space; information representing a weight of the temperature change for each of the plurality of detection areas included in the human area is calculated based on the temperature change for each of the plurality of detection areas included in the human area of ​​the plurality of learning data, and the plurality of detection areas included in the human area are associated with the information representing the weight of the temperature change. A method for controlling a lighting device.

5. a control device that controls a lighting device that adjusts an illumination state including at least one of an illumination direction and a focal length to illuminate an illumination area; The control device includes: The infrared sensor is composed of a plurality of MEMS elements respectively corresponding to a plurality of detection areas, and detects the presence or absence of a person in each of the plurality of detection areas by a temperature change. Based on a detection result of the presence or absence of a person in each of the plurality of detection areas of the sensor and a position detection model that has been previously trained to identify a person-presence area among the plurality of detection areas, irradiation state data is specified that specifies the irradiation state according to the position detection model; Controlling the illumination state of the illumination region based on the illumination state data; The attended region includes a region different from the irradiated region, The human presence area includes a plurality of the detection areas, The control device includes: The location detection model is a plurality of pieces of learning data are used to calculate the detection area, each of which includes a different part of the human presence area, even though a person is present at the same position in the lighting space; information representing a weight of the temperature change for each of the plurality of detection areas included in the human area is calculated based on the temperature change for each of the plurality of detection areas included in the human area, and the plurality of detection areas included in the human area are associated with the information representing the weight of the temperature change. Lighting control device.

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